A shared SSL will normally direct your consumers over to a site that your web hosting provider has set up. Does this look unprofessional? Perhaps. But it is up to you.
Sometimes using a shared SSL you have to do a few extra things to make the checkout procedure work. Everything (images etc) needs to be called via SSL. Sometimes some hosting companies require you to put everything in a special folder in your domain.
Which SSL will help explain some differences in the ssl providers
Corey has a very vaild point. It really all depends on the provider offering shared ssl service. To make things easier, I would suggest just getting a private SSL and have the host set it up for you. Or on the other hand you can get a shared if your budget does not allow for a private. Thats basically the only difference is budget IMHO. Shared is free, private you pay for.
If you can't afford to get a private SSL, you have defeated yourself because it is all about giving your customers a reason to buy from you and you want to look professional and safe.
Here are some good things to do that show a genuine presence:
- Dedicated IP address and private ssl
- BBB member & online reliability seal
- D&B number (D&B seal is good too)
- Server vulnerability check seal
- Easily found street address and phone number on website (no PO box!)
- Domain name registration information matches address and phone number on website
- Register domain name for more than 1 year